Answer:
ionic bond
Explanation:
When two ions transfer electrons or bond together they make an ionic bond.
The correct order of steps in an experiment would be:
- Identify the variables.
- Write out your hypothesis in an if/then format.
- Gather your materials.
- Analyze the data.
- Write your conclusion.
<h3>What is an experiment?
</h3>
An experiment is a term to refer to the process by which a hypothesis is supported/disproved. The experiments serve to explain the cause-and-effect relationship according to the results obtained.
Experimentation has some important steps that we must follow to demonstrate our ideas regarding a scientific manifestation, these steps are:
- Identify the variables: We must identify the factors that we can manipulate so that the result changes.
- Write our hypothesis: Establish a hypothetical result that we are going to demonstrate.
- Gather the materials: We must have all the materials and variables to be able to carry out our experiments.
- Analyze the data: When we do an experiment we must record everything we see and then analyze it to examine each step and the procedures performed.
- Write the conclusion: After analyzing the data obtained, we can write a conclusion about the experiment carried out and the result obtained.
Learn more about experiments in: brainly.com/question/9199868
Answer:
Explanation:
Meiosis is a form of cell division that occurs in the sex cells of organisms. It ensures the reduction of a diploid cell to an haploid cell to allow for the formation of a diploid zygote after fertilization (contribution of both parents haploid sex cells to give a diploid zygote). Thus, this process is very essential and important.
The reduction is accomplished by 2 divisions after the duplication of chromosomes
- first division: separation of homologous pairs of chromosomes (this reduces the total in half)
- second division: separation of sister chromatids of a chromosome.
The rearrangement in meiosis occurs by crossing over/genetic recombination.
This is the exchange of genetic material between homologous pairs of chromosome bringing about a rearrangement and genetic variation
An example of a chromosomal abnormality that arises as a result of defects in this process is the Down Syndrome which is caused by a nondisjunction of the chromosomes 21 pair in a sex cell.
This condition produces offsprings that have some characteristic facial features, short stature etc
natural selection, bc it is the process whereby organisms better adapted to their environment tend to survive and produce more offspring
